Tobacco-pipe stem.



H. M. BROWNE.

TOBACCO PIPE STEM.

APPLICATION FILED AUG;21, 1913.

Patented July 7, 1914,

worizeg A To all whom it may concern:

roBAooo-mn swam. T

Be a known that I, HUGH M. Ram, a

' citizen of the United States of America, re-

siding at-Cheyney in the county of Dela- Ware and State oi Pennsylvania,have mvented certain new anduseful Improvements. in Tobacco-Pipe Stems,of which the following is a specification.

'-.The main objects of this invention are vto provide a tobacco pipestem consisting of an outer and an inner member, the latter beingcomposed of a nest of tubes; to provide a tobacco-pipe stem havingimproved means for securing a long draft of the smoke through a shortstem; to provide a tobacco-pipe stem having improved means forseparating the nicotine from the smoke; to provide a tobacco-pipe stemhaving 1mproved means fOILPIeVBIIiJlIIg the deposit of nicotine upon thewalls of the outer stem member or stem proper; to provlde' atobacco-pipe stem having improved means for securing easy and cheaprenewal of the parts upon which nicotine is deposlted, thus securing aclean and sanitary condition without resort to the cleaningnecessaryforother pipe stems; and to provide -a tobacco-pipe stem having an improvedmeans for preserving in use inner stem member which may be employed inconnection with valuable stems, to preserve the latter for useindefinitely.

With these and other objects inview, the invention consistsof the novelconstruction, combination and arrangement of parts hereinafter fullydescribed and claimed, and illustrated in accompanying drawings inwhich- Figure 1 is a longitudinal sectional view of atobaccopipeequipped with a stern embodying the said invention; 2 is a longitudinalsectional view of the inner stem member, showing the two parts thereofin c osed position; Fig. 3 is new similar to Fig. :2, but showing the a-:ementionod parts separated from each other; and is. is a transversesection on line 2 Referring more particularly feature oi my inventionconsis'ts, shown, of an outer member, or stem nroper and an inner member4- The outer Specification of Letters 2min. Pawmed July 7 1 Applicationfiled August 21, 1913. Serial no, was-,see,

member 3 is in the form of a hollow, tubular shell which may be made ofany desired material and inany suitable length, its diameter at itsfront end being such as to enable it to frictionally fit within theusual metal band 19 onthe neck of the bowl.

The inner stem member 4 is itself preferabl com osed of two separableparts, 4!

4:, w ich are adapted to telescope together and-which consist, each, ofa plurality otconcentric, nested tubes. In the constructlondeplcted, theinner part 4' comprises a pair of tubes 5 a'nd 7 arranged in spaced,concentric relation and connected at one end to a cap 10, while theouter part 4: comprises three similarly-arranged tubes 6, 8 and 9,connected, at the opposite end from the first-namedtubes, to a cap 11.The cap 10 is formed with a continuous, peripheral 'fiange17 which isformed upon its front edge, the remainder of the cap being adapted tofit in the front end of the outermost tube 6 of the outer part 4?, sothat the flange thus acts as a stop to limit the inward movement of part4' into part 4 Where the Width of the said flange is sufliciently great,as in the illustrated embodiment, it may extend, in the same way, acrossthe front end of the outer stem member 3, thereby serving both to fixthe position of the inner member a as a whole with reference to theformer member, and to prevent the entrance of rear of said collar andthe'annular space or chamber between the tubes 6 and 8, the former tubeextending a slight distance behind cap and being then. reduced orattenuated to produce the said chamber 2 1 the nipple 2:2 connectedthereto, which n pple is designed for insertion in the bore ormonth-piece 2. The tube 6 also extends beyond the front ends of theinner tubes 8 9, as she i in Fi s, 21 and 3-.

When the two parts i and of the inner stem member 4 are interiitted inthe manner indicated in 3, the tube 2' tacpart will proiect into theannular space or char; her produced between the tubes 23 9 the part 4and will, in consequence, act as naunicat ion between the chamber 21 inthe a partition for such space or chamber, while the other tube 7 of thefirst-named part will project into the interior of the innermost tube 9.Owing, however, to the relative lengths of the outermost tube 6 and thetwo inner tubes 8 and 9, the free front ends of the said tubes 8 and 9will terminate short of cap 10, and the free rear ends of the tubes 5and 7 will, in like manner, terminate short of cap 11, thus providingcommunication, alternately at opposite ends between the successiveannular spaces or chambers produced between ad acent' tube walls.Accordpassing rearwardlv through the space or chamber produced betweentubes 9 and 7. It then escapes at the rear end of the latter spaceorchamber, reverses its direction, and flows forwardly through the spaceor chamber produced between tubes 7 and 8. It then escapes at the frontend of the last-named space or chamber and flows into and through theoutermost space or chamber, which isproduced between'tubes 8 and 6, andfrom this space or chamber itflows through the openings 13, 14, 15 and16 in cap 11 into the chamber 21 at the rear thereof, whence it finallypasses through nipple 22 into and through the bore of the mouth-piece 2.In consequence of this arrangement, it will be noted that the smoketravels through a tortuous path which is of very considerable length ascompared with the length of the stem of the pipe. During its travel, thesmoke is cooled to an extent suflicient to condense thenicotinecontained therein, which is deposited on the walls of the tubes andon'the caps 10 and 11, and after a certain quantity has thus penetrateto the outer member 3,. since the.

passage of smoke into and through the space between members 3 and 4 isprevented by the extension of.flange 17 across the front end of member3, the latter member, therefore, being always kept in a'clean state.Finally, it is to be observed that the stem is designed for removal asan entirety, or bodily, from the bowl neck, thus permitting cleaning ofduct 18.

I claim;

A tobacco pipe having'a bodily removable stem comprising a tubular outermember,

and an inner member which is removably' fitted in the bore of said outermember and which is provided with front and rear caps and behind thesecond-nan1ed cap with a closed end'having a nipple leading therefrom,said caps having inlet and outlet apertures, respectively, for the smokeand the front cap havin a continuous, peripheral flange which pro ectsacross the front edge of the outer stem member to prevent the entranceof smoke between said out-er member and the inner member, and amouthpiece removably connected to the rear end of-the said outer memberand having its front end abutting against the closed rear end of thesaid inner member and its bore receiving the said nipple.

In testimony whereof I have aflixed my signature in presence of twowitnesses. HUGH M. BROIVNE.

lVitnesses:

THOMAS I. DICKSON, DOROTHY SANDBERGER.

